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The intention of adding desiccant to food packaging bags

by:FAST SINCERE     2019-12-22
Package Size: today Xiaobian shares with you, 'the intention of adding desiccant in food packaging bags '. The food packaging bag contains desiccant and clearly indicates that it is not edible. The function of desiccant is obviously to reduce the humidity of food in food bags and prevent food deterioration and corruption. Let's elaborate on it one by one. The types of desiccant can be roughly divided into five types: first, silica gel desiccant is a kind of aqueous silica with high microporous structure, it has the characteristics of colorless, odorless, non-toxic, stable chemical properties and good moisture absorption. Widely used in instruments, instruments, leather, luggage, food, textiles, equipment, etc. Its function is to control the relative humidity of the environment during storage and transportation to prevent moisture, mildew and rust. It is worth noting that this is the only desiccant approved by the EU. Second, the biggest feature of fiber desiccant is that it is made of pure natural plant fiber and refined by special process. It is worth mentioning that the coated fiber desiccant sheet saves space and is convenient and practical. Its moisture absorption capacity is equivalent to its own weight, far higher than other desiccant. Due to its moderate price, safety and hygiene, it is the best choice for many health products, medicines and biological desiccant. 3. Montmorillonite desiccant is widely used in medical care, food packaging, optical instruments, electronic products, military products and civil products. These products cannot be sealed with oil seals and weather. Due to the use of pure natural raw material bentonite, it has the characteristics of strong adsorption capacity, fast adsorption speed, tasteless and non-toxic, no environmental pollution and no contact corrosion. Green and environmentally friendly, tasteless and non-toxic, does not harm the human body, has good adsorption performance, has adsorption activity, static moisturizing, deodorization and other effects. Four, quicklime desiccant middle school chemistry class has talked about quicklime, its main component is calcium oxide, through chemical reaction to achieve water absorption, has irreversibility. The most common is the use of this kind of desiccant in 'Snow Cake. In addition, it is also commonly used in electrical appliances, leather, clothing, shoes, tea, etc. , but because quicklime is a strong alkali, it has strong corrosivity, and sometimes the eyes of the elderly and children are injured, at present, it is gradually being eliminated. Five, calcium chloride desiccant calcium chloride is mainly made of high-quality calcium carbonate and hydrochloric acid through reaction synthesis, filtration, evaporation concentration, drying and other processes. It is used as calcium fortifier, chelating agent, curing agent, desiccant, etc. in the food industry. At the same time, it is also used as a gas desiccant to produce dehydrating agents such as ether, alcohol and propylene resin. Calcium chloride is mostly porous block, granular or honeycomb material, odorless, slightly bitter in taste and colorless in water.
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